Self-cooling plastic drink bottle

Abstract

The present invention describes an improved plastic drink bottle. By preparing a drink bottle with separate closed internal compartments that allow for access to drinking fluids in one or both closed internal compartments, one may effectively cool beverages and supply more than one beverage in a single drink bottle.

1 . A plastic drink bottle having two closed internal compartments, said closed internal compartments being able to hold a first drinking fluid and a second drinking fluid, such that a user may access said first drinking fluid independent of said second drinking fluid. 
   
   
       2 . The plastic drink bottle according to  claim 1 , wherein each closed internal compartment has an external cap. 
   
   
       3 . The plastic drink bottle according to  claim 1 , wherein said closed internal compartments are filled with said first drinking fluid and said second drinking fluid prior to sale. 
   
   
       4 . The plastic drink bottle according to  claim 1 , wherein said closed internal compartments are manufactured with protrusions and indentations on one side of said closed internal compartments. 
   
   
       5 . The plastic drink bottle according to  claim 1 , wherein the volume and shape of said plastic drink bottle as well as the surface area between said closed internal compartments are optimized for cooling of a drinking fluid added to one of said closed internal compartment of said plastic drink bottle. 
   
   
       6 . The plastic drink bottle according to  claim 1 , wherein said closed internal compartments are separated by a separator that runs the entire height of the plastic drink bottle. 
   
   
       7 . A method for providing cooled drinking fluid for an extended period of time, including the steps of:
 Preparing two closed internal compartments, each closed internal compartment being able to receive a drinking fluid;   Filling a first closed internal compartment with a drinking fluid and closing said internal compartment with a cap;   Placing said first closed internal compartment with drinking fluid into a freezer for a period of time that allows for freezing of said drinking fluid in said first closed internal compartment;   Removing said first closed internal compartment from said freezer;   Adding a second drinking fluid to a second closed internal compartment, such that said second drinking fluid is in non-contact proximity to frozen first drinking fluid.   
   
   
       8 . The method according to  claim 7 , wherein said drinking fluid added to said first internal compartment is water. 
   
   
       9 . The method according to  claim 7 , wherein said closed internal compartments have separate external caps. 
   
   
       10 . A disposable drinking bottle, said disposable drinking bottle having two closed internal compartments manufactured separately and then joined together to form a single disposable drinking bottle. 
   
   
       11 . The disposable drinking bottle according to  claim 10  wherein said disposable drinking bottle includes two external caps. 
   
   
       12 . The disposable drinking bottle according to  claim 10  wherein the separately manufactured closed internal compartments are joined together after addition of drinking fluids to said closed internal compartments.